Yes and no. Yes because people can reproduce to keep the population of the species alive. The reason i said no is because animals and plants keep the human race alive. Plants and animals are technally food. Plants circulate the oxygen so we can breathe.
Adverb clauses function as adverbs and answer such questions as : when, where, why, under what conditions. They modify verbs, adverb, and adjectives. They also have to begin with a subordinating conjunction as well as contain a subject and a predicate.
Mrs. Sanchez -- subject
will help -- verb
if you ask-- adverb clause modifying the verb " will help " answering the question : under what condition.
A related process is co articulation, where one segment influences another to produce an allophonic variation, such as vowels acquiring the feature nasal<span> before </span>nasal<span> consonants when the velum opens prematurely or becoming labialised as in "boot". </span>